/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Initial Developer of the Original Code is
*   Nick Kreeger
* Portions created by the Initial Developer are Copyright (C) 2006-2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*   Nick Kreeger <nick.kreeger@park.edu>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
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* decision by deleting the provisions above and replace them with the notice
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* the provisions above, a recipient may use your version of this file under
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*
* ***** END LICENSE BLOCK ***** */

#import <Cocoa/Cocoa.h>
#import "MessageListDataSource.h"

@class MessageHeader;
class nsISimpleEnumerator;

/**
 * This class provides a simple data structure to resemble 
 * a one-dimensional array of messages.
 */
@interface MessagesDataSource : NSObject <MessageListDataProvider>
{
  NSMutableArray* mMessages;    // strong ref
  
  BOOL mIsSortDescending;
  SEL  mCurrentSortSelector;
}

/**
 * Build a message list given the gecko message enumerator. This method
 * will remove any stored messages.
 * @param aSimpleMsgEnum The message enumerator to build from.
 */
-(void)createMessageListForHeaderEnum:(nsISimpleEnumerator*)aSimpleMsgEnum;
-(MessageHeader*)messageHeaderAtIndex:(int)aIndex;
-(int)indexOfMessageHeader:(MessageHeader*)aMessageHeader;

@end
